import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import static com.sun.tools.javac.jvm.ByteCodes.swap;
import static java.util.Collections.swap;

public class Cards {
    public static final String[] suits={"♥","♠","♣","♦"};//四个花色，每个花色有13张牌
    public List<Card> buyCard(){
        List<Card>cardList=new ArrayList<>();
        for(int i=0;i<4;i++){
            for (int j=1;j<=13;j++){
                int rank=j;
                String suit=suits[i];
                Card card=new Card(rank,suit);
                cardList.add(card);

            }
        }
        return cardList;
    }
    public  void shuffle(List<Card> cardList){//洗牌
        Random random=new Random();
        for (int i=cardList.size()-1;i>0;i--){
        int randIndex=random.nextInt(i);
        swap(cardList,i,randIndex);
    }}
    private void swap(List<Card> cardList,int i,int j){
        Card tmp=cardList.get(i);
        cardList.set(i,cardList.get(j));
        cardList.set(j,tmp);
    }
    //三个人每人轮流抓5张牌
    public void drawCard(List<Card>cardList){
        List<Card>hand1=new ArrayList<>();
        List<Card>hand2=new ArrayList<>();
        List<Card>hand3=new ArrayList<>();
        List<List<Card>>hands=new ArrayList<>();
        hands.add(hand1);
        hands.add(hand2);
        hands.add(hand3);
        for (int i=0;i<5;i++){
            for (int j=0;j<3;j++){

                Card card=cardList.remove(0);
                hands.get(j).add(card);
            }
        }
        System.out.println("第1个人的牌"+hand1);
        System.out.println("第2个人的牌"+hand2);
        System.out.println("第3个人的牌"+hand3);

    }
}

